如果不是的英文：
if instead of

If it's not schizophrenia, what else presents with psych symptoms?
如果不是精神分裂症还有什么病有心理症状？

He probably would have continued to strut his stuff for a lot longer had he been less combative.
小淘气’’如果不是那么好斗，或许能有更多的时间继续炫耀它的技巧。

Intelligence is nothing if not an institutionalized Black market in perishable commodities
情报工作如果不是一个买卖易坏商品的制度化的黑市，还能是什么呢

If it were not for our conception of weights and measures we would stand in awe of the firefly as we do before the sun.
如果不是由于我们以重量和长度来认识事物，当面对萤火虫的微光时，我们也会像面对太阳一样敬畏。

Every man at forty is a fool or a physician
人到四十,如果不是傻子,就该知道保养身体

"You must be an opera fan, if not an expert. "
你如果不是行家的话，也肯定是个京剧迷。

If we hadn't listened to them, this hydropower station would never have been built
如果不是听取他们的建议，今天就不可能有这个水电站。

The answer is meaningless unless you discover it for yourself.
如果不是你自己找到的，那个答案就毫无意义。

But for the world's opinion, those experiences would have been simply a liberal education.
如果不是由于世俗的成见，那番经验简直就是一种高等教育。

Rumor is at fault if he does not soon yield entire subjection to one of them
听说他不久就要对其中一位女士俯首听命，如果不是这样，这个传闻就是捕风捉影了。

They fled instead of making a stand.
他们逃跑而不进行抵抗。

The roof was slated instead of thatched.
那个屋顶不是用草而是用石板盖的。

Instead there was another fudge.
取而代之的是另外一种谎言。

Instead the researchers observed a gradient.
然而研究人员观察到了梯度的产生。

Instead, the session has sowed confusion.
相反，这次会议却引发了混乱。